The next-time you troll know-it-all's run out of intelligent things to say, then resort to juvenile games and challenges instead, maybe you should brush up on basic horticulture yourselves, instead of suggesting others do so.
"Reusing Container Media
When reusing container media from year to year, organic matter breaks down and decomposes, causing a decrease in the size of particles and pore space, resulting in reduced drainage and aeration. Emptying out the container mix, breaking up the material and any old roots, and re-blending keep the media from getting too compacted. Because many of the nutrients are used by plants or leached out during the previous growing season, add additional media, compost, and fertilizer."
"Frequency
the plant should be watered. At the other extreme, avoid overwatering, as the water fills all of the pore space in the potting mix and the roots are unable to get enough oxygen. Water only when needed, and water pots until the water starts to come out the bottom of the container.
This prevents root rot, prevents a buildup of salts that would occur"
"Potting Mixes, Substrates, or Growing Media
Skip to Potting Mixes, Substrates, or Growing Media
The potting “soil” used to grow container plants is really not soil at all. True soils are field soils that often retain too much water, have too little pore space (for oxygen), are too heavy. Because of these drawbacks, field soils are no longer used for growing plants in containers''
Is university material ok? As I said, I implore you to do yourself the favour and prove me wrong.
You're on ignore too, have a great life.